Method of lining metallic vessels



June 15, 1937. s. M.ISECRIST 2,084,293

METHOD OF LINING METALLIC VESSELS Filed Nov. 8, 1954 [now aim: 5774mm EY M. 6EcE/5T,

Patented June 15, 1937 UNITED STATES METHOD- or mmvc METALLIC VESSELS Stanley M. Sccrist, New York, N. Y., assignor to American Sheet and Tin Plate Company, a

corporation of New Jersey Application November 8, 1934, Serial No. 152,150

2 Claims.

This invention relates to an improved method of lining metallic vessels, and more particularly to the application of heat-and-corrosion resistant metallic linings (such as are composed of 5 stainless steel) to metallic tanks, although not limited thereto.

It is among the objects of the present invention to provide a novel method of lining metallic vessels which may be rapidly and economically 10 utilized under the most diiiicult and confining circumstances.

Another object is to enable the installation of high quality linings in tanks or vessels which might otherwise be discarded or become useless 15 for certain purposes.

These and other objects will be apparent after referring to the drawing, in which:

Figure 1 is a sectional view of the medium to be treated in accordance with the method of the 20 invention.

Figure 2 is a similar view of the medium of Figure 1 after the completion of the first stage. Figure 3 is a similar view disclosing a third stage of the method.

Figure 4 graphically represents the combination of the novel method.

Figure 5 is a view similar to Figure 4 but representing the slight modification of the method.

.Reierring more particularly to the drawing, 30 the numeral i designates a heavy metallic base, such as the inner side of a tank or vessel, for which there is desired a lining of high quality material. As an example, tanks formed of heavy steel plate, whose initial linings of glass, lead or 35 the like have been found faultyand removed, may be reconditioned by substituting a high quality metal, such as stainless steel.

According to the teaching of the present invention, the metallic base l0, having sides 52 40 and I3, is a'pertured at spaced intervals, as shown at it. As shown in Figure 2, these apertures I! are preferably countersunk in such manner as to have their smallest openings i communicating with the side of the metallic base ill for which 45 the lining is desired (that designated at i3 in the present instance). The welding will be accomplished through the largest openings it of the apertures It.

The lining for the side i3 of the metallic base 50 i0 is shown in Figure 3 as comprising a relatively thin sheet of heat-and-corrosion resistant metal ll which is placed over the smallest openings i5 of the apertures it.

The next step in the method is to make evi- 55 dent on the exposed side of the lining ii the locations of the apertures M with respect thereto. This may be done with a punch it which is applied through the apertures, as shown in Figure 3, and struck with a hammer (not shown); or as an alternative, the application of heat'by are or gas torch It, as shown in Figure 4, in such manner as to discolor the exposed side of the lining ll.

After the locations of the apertures M are indicated on the exposed side of the lining I'I a heat conductive element ii! is placed thereover immediately prior to the welding per se. This heat conductive element 20, as shown in Figure 4, is preferably a copper ball mounted on a rod 2|, and should be firmly held against the exposed side of the lining l'l. This may be done by a jack (not shown) in contact with the opposite side of the tank or vessel III. Experiment has shown that the pressure exerted on the heat conductive element 20 should preferably be of sufiicient magnitude to slightly distort the lining ll. This condition, as illustrated in dotted lines at 22 in Figure 5, not only secures a better contact for the eifective dissipation of heat but also prevents the excessive discoloration of the exposed side of the lining H by the spreading thereof.

A welding medium 23, preferably a filler metal of the same analysis as that of the lining I1, is introduced into the largest opening it of the aperture M. This welding medium 23 forms a rigid union between the metallic lining i1 and the metallic base it, which under most circumstances would be of a dissimilar analysis. After sufiicient welding medium 23 has been introduced into the aperture it to form a rigid union, it may be more or less completely filled with any suitable fusible metal 24, such as steel.

After the welding has been completed the metallic lining i! will be found to serve satisfactorily under all conditions of usage, whether stationary or movable.

While I have shown and described one specific embodiment of my invention, it will be understood that I do not wish to be limited exactly thereto, since various modifications may be made without departing from the scope of my invention, as defined in the following claims.

I claim: a

1. The method of lining a metallic vessel which includes the operations of forming a plurality of apertures in said vessel, disposing a relatively thin imperforate sheet against the inner wall of the body of the metallic vessel, said thin imperforate sheet being composed of a metal which is dissimilar to that of said vessel, applying successivel y and under pressure a heat conductive element to said thin imperforate sheet on its side remote from but in alinement with the plurality of apertures in said vessel, and securing said thin imperiorate sheet to the inner wall oi the body of the metallic vessel solely by forming weld plugs which are connected to the side walls 01' the apertures in said vessel and to the adjacent surface oi said thin imperforate sheet, the formation of each of said weld plugs being conducted from the outside of said vessel while said heat conductive element is in alinement with the particular aperture in which it is to be formed.

2. The method of lining a metallic vessel which includes the steps oi forming an aperture in said vessel, disposing a metallic sheet against the inner wall of said vessel, defgrmingan unbroken surface of said sheetniir'tiilfifinto the aperture into said vessel. and;welding the deformed and unbroken surface oi said sheet to the wall 0! the aperture in said vessel, thereby amxing said sheet to the inner wall of said vessel, said welding step being carried out from outside of said vessel.

STANLEY ll. SECRIST. 

